Hi! Is it normal that my 2012 classic mbp does not have any activity sounds? I'm speaking of the fast paced "clicking" sounds, typical of computers when they process something. I'm asking because my earlier mac, a mini, did not have these sounds out of the box and a logic board and hdd failure followed several months later and the activity noises where back when I got the computer repaired and now on my new macbook they are absent as well. Is it normal or should I expect a hardware failure?